By Lynette Rice
Updated July 11, 2011 at 12:00 PM EDT

To help kick off its run of live shows, America’s Got Talent will feature a performance by Avril Lavigne during Wednesday’s telecast.

Lavigne will perform “What the Hell” and “Smile” during the live results show that begins at 9 ET on NBC. It will also feature a performance from the Broadway musical “Priscilla Queen of the Desert.”

AGT’s first live performance show will air Tuesday and feature 12 of the top 48 contestants. They are Anna Graceman, Dezmond Meeks, Duo Aero, Echo of Animal Gardens, Fearless Flores Family, J Chris Newberg, Miami All-Stars, Sandou Trio Russian Bar, Snap Boogie, Squonk Opera, The Fiddleheads and Those Funny Little People.

Eight acts will be eliminated on Wednesday.